Absolutely agree, and I'm sure the headers made some difference but the low lift numbers on the intake of the cnc speedmaster really stood out to me. If I guy can port he can have ootb trickflow performance for a few hundred less after upgrading springs but I had enough of porting and spent the few hundred on the tf heads, took them apart, cleaned them, shimmed a few springs, put them together and ran them lol. I do think allot of people expected too much "magic" from a 190 port 2K set of mopar heads,although they do look the part of "full race" heads.